How severe is CVE-2023-24998?

CVE-2023-24998 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-24998 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-24998?

CVE-2023-24998 primarily affects Apache Commons Fileupload. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-24998?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-24998 published?

CVE-2023-24998 was published on 2023-02-20 and last updated on 2026-06-17.

CVE-2023-24998

CVE-2023-24998 is a high-severity vulnerability in Apache Commons Fileupload with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 47% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 47% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Apache Commons Fileupload
Published: 2023-02-20
Last modified: 2026-06-17

Description

Apache Commons FileUpload before 1.5 does not limit the number of request parts to be processed resulting in the possibility of an attacker triggering a DoS with a malicious upload or series of uploads. Note that, like all of the file upload limits, the new configuration option (FileUploadBase#setFileCountMax) is not enabled by default and must be explicitly configured.

Frequently asked questions

What is CVE-2023-24998?: Apache Commons FileUpload before 1.5 does not limit the number of request parts to be processed resulting in the possibility of an attacker triggering a DoS with a malicious upload or series of uploads. Note that, like all of the file upload limits, the new configuration option (FileUploadBase#setFileCountMax) is not enabled by default and must be explicitly configured.
How severe is CVE-2023-24998?: CVE-2023-24998 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-24998 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-24998?: CVE-2023-24998 primarily affects Apache Commons Fileupload. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-24998?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-24998 published?: CVE-2023-24998 was published on 2023-02-20 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:apache:commons_fileupload:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:commons_fileupload:1.0:beta:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

More vulnerabilities in Apache Commons Fileupload

CVE-2016-1000031 — Critical (CVSS 9.8): Apache Commons FileUpload before 1.3.3 DiskFileItem File Manipulation Remote Code Execution
CVE-2025-48976 — High (CVSS 7.5): Allocation of resources for multipart headers with insufficient limits enabled a DoS vulnerability in Apache Commons…
CVE-2016-3092 — High (CVSS 7.5): The MultipartStream class in Apache Commons Fileupload before 1.3.2, as used in Apache Tomcat 7.x before 7.0.70, 8.x…
CVE-2014-0050 — High (CVSS 7.5): MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other…
CVE-2013-0248 — Low (CVSS 3.3): The default configuration of javax.servlet.context.tempdir in Apache Commons FileUpload 1.0 through 1.2.2 uses the /tmp…

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